Humidifier



FIG. 1 is a front perspective view of a humidifier showing our new design.

FIG. 2 is a front elevational view of the humidifier.

FIG. 3 is a back elevational view of the humidifier.

FIG. 4 is a right side elevational view of the humidifier.

FIG. 5 is a left side elevational view of the humidifier; and,

FIG. 6 is a top plan view of the humidifier.

The broken line showing of environmental structure in FIGS. 1-6 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a humidifier, as shown and described. 